The New Hampshire-based company confirmed persistent rumors about the new pistol in June when they released an extended 15-round magazine. The device is backward compatible across the legacy P365 line, which has 10-round flush fit and 12-round extended mag choices.

Besides the option for 15-round mags, the updated P365 XL runs a longer 3.7-inch barrel (up from 3.1 in the P365) and corresponding optic-ready slide. Further, the new gun has Sig’s XSERIES features to include an improved grip module with extended beavertail and a flat trigger with a 90-degree break.

“When the P365 was introduced it hit the market by storm, and was a game-changer when it comes to Everyday Carry, by delivering unprecedented capacity in a micro-compact size,” said Tom Taylor, chief marketing officer for Sig. “With the P365 XL, we have once again redefined Everyday Carry by delivering 12+1 capacity, or 15+1 capacity, in a highly concealable, compact profile while bringing many of the XSERIES features to the P365 that are extremely popular and sought after by consumers.”

The P365 XL features an optics-ready slide, compatible with the Sig’s own Romeo Zero series optics as well as RMSc optics and comes equipped with X-RAY3 day/night sights. (Photos: Sig)

Total length is 6.6-inches (compared to the base P365’s 5.8-inches) while weight, with an empty 12-round mag, is 20.7-ounces. By comparison, Glock’s vaunted G19, with its 15-round magazine capacity, tips the scales at 23.63-ounces with an empty mag while taping out at 7.36-inches in overall length.

The P365 XL ships with two 12-round magazines with 15-rounders sold separately. MSRP is in the $599 range and the gun started shipping this month to dealers.